US3280368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starter for high pressure arc lamps
Assignee: Engelhard Hanovia Inc
•
Filing: 1964-03-20
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Granted: 1966-10-18
•
Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 Mohammed Z Ahmed
- 👤 Mauel S Diaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:17
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/231; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A STARTER FOR A HIGH PRESSURE ARC LAMP HAVING A PAIR OF SPACED ELECTRODES AND COMPRISING A HIGH VOLTAGE STEPUP COUPLING TRANSFORMER HAVING A SECONDARY COIL ADAPTED TO BE CONNECTED ACROSS SAID ELECTRODES AND HAVING A PRIMARY COIL, A SOURCE OF DIRECT CURRENT ELECTRIC POWER HAVING A POSITIVE AND NEGATIVE TERMINAL, A MULTIVIBRATOR OPERATIVELY CONNECTED TO SAID POWER SOURCE, MEANS CONNECTED TO AMPLIFY PULSES FROM THE MULTIVIBRATOR, SWITCH MEANS ACTUATED BY THE AMPLIFIED PULSES TO ALTERNATELY PASS AND BLOCK ELECTRIC POWER FROM THE POWER SOURCE THROUGH THE PRIMARY COIL, SAID MEANS CONNECTED TO AMPLIFY PULSES FROM THE MULTIVIBRATOR COMPRISING AN NPN TRANSISTOR HAVING A BASE, A COLLECTOR AND AN EMITTER; A CAPACITOR CONNECTED BETWEEN THE MULTIVIBRATOR AND SAID BASE; AND A RESISTOR CONNECTED BETWEEN SAID BASE AND THE NEGATIVE TERMINAL OF THE POWER SOURCE; SAID COLLECTOR BEING CONNECTED THROUGH A SECOND RESISTOR TO THE POSITIVE TERMINAL OF THE POWER SOURCE AND SAID EMITTER BEING CONNECTED TO SAID SWITCH MEANS.
Claim 2
Dependent Claim
159 words
A STARTER FOR A HIGH PRESSURE ARC LAMP HAVING A PAIR OF SPACED ELECTRODES AND COMPRISING A HIGH VOLTAGE STEPUP COUPLING TRANSFORMER HAVING A SECONDARY COIL ADAPTED TO BE CONNECTED ACROSS SAID ELECTRODES AND HAVING A PRIMARY COIL, A SOURCE OF DIRECT CURRENT ELECTRIC POWER HAVING A POSITIVE AND NEGATIVE TERMINAL, A MULTIVIBRATOR OPERATIVELY CONNECTED TO SAID POWER SOURCE, MEANS CONNECTED TO AMPLIFY PULSES FROM THE MULTIVIBRATOR, SWITCH MEANS ACTUATED BY THE AMPLIFIED PULSES TO ALTERNATELY PASS AND BLOCK ELECTRIC POWER FROM THE POWER SOURCE THROUGH THE PRIMARY COIL, SAID MEANS CONNECTED TO AMPLIFY PULSES FROM THE MULTIVIBRATOR COMPRISING AN NPN TRANSISTOR HAVING A BASE, A COLLECTOR AND AN EMITTER; A CAPACITOR CONNECTED BETWEEN THE MULTIVIBRATOR AND SAID BASE; AND A RESISTOR CONNECTED BETWEEN SAID BASE AND THE NEGATIVE TERMINAL OF THE POWER SOURCE; SAID COLLECTOR BEING CONNECTED THROUGH A SECOND RESISTOR TO THE POSITIVE TERMINAL OF THE POWER SOURCE AND SAID EMITTER BEING CONNECTED TO SAID SWITCH MEANS.
References Cited (Backward Citations)
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US2891195A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |